Unequivocal Synthesis of (<i>Z</i>)-Alkene and (<i>E</i>)-Fluoroalkene Dipeptide Isosteres To Probe Structural Requirements of the Peptide Transporter PEPT1
作者:Ayumu Niida、Kenji Tomita、Makiko Mizumoto、Hiroaki Tanigaki、Tomohiro Terada、Shinya Oishi、Akira Otaka、Ken-ichi Inui、Nobutaka Fujii
DOI:10.1021/ol052781k
日期:2006.2.1
Described is a novel synthetic route for dipeptide isosteres containing (Z)-alkene and (E)-fluoroalkene units as cis-amide bond equivalents via organocopper-mediated reduction of gamma-acetoxy- or gamma,gamma-difluoro-alpha,beta-unsaturated-delta-lactams. The synthesized isosteres were evaluated in terms of their affinities for the peptide transporter PEPT1. traps-Amide isosteres tended to possess higher affinities for PEPT1 as compared to the corresponding cis-amide bond equivalents.